Window-sash fastener.



PATENTED MAY 15, 1908.]

H. 'L. BENNBR.

WINDOW SASH FASTENER.

APPLICATION FILED NOV. 7, 1905.

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Figs. 3 and 4 are HENRY L. BENNER, OF PHILADELPHIA, PENNSYLVANIA.

WlNDOW-SASH FASTENER.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed November 7,1905. Serial No. 286,206.

To all whom it 11mg concern:

Be it known that I, HENRY L. BENNER, a citizen of the United States,residing in the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented a certain new and usefulImprovement in Window-Sash Fasteners, whereof the following is aspecification.

One object of the present invention is to provide an efficient, durable,and reliable window-sash fastener of simple construction, and thereforeof comparatively inexpensive cost.

Another object of the invention is to provide a fastener that istantamount to being automatic in its operation.

The invention consists of the improvements hereinafter described andfinally claimed.

The nature, characteristic features, and scope of the invention will bemore fully understood from the following description, taken inconnectionvwith the accompanying drawings, forming part hereof, and inwhich- Figure 1 is a view illustrating the application of the inventionto a window-frame and upper and lower sash of the same. Fig. 2 is anedge view of thekeeper for the upper sash. an edge and elevational view,respectively, of the spring-controlled detents for engaging the keeper.Figs. 5 and 6 are a front and side elevational view, respectively, ofthe combined sash-lift and detent. Figs. 7 and 8 are a side elevationaland bottom plan view of the catch for the sashlift, and Fig. 9 is adetail view of Fig. 7.

In the drawings, a is the window-frame provided with the u per and lowersash b and c. The catch d 1s fastened to the frame a and is adapted toform engagement with thespring-controlled detent e, which, as shown, ispart of the sashelift f. This lift forming a detent is pivotally securedto the member g and works in slots therein. In use this memher isscrewed or otherwise secured to the lower sash 0. Upon the frame a issecured the member h, vertically slotted to accommodatethe'spring-controlled detents '1', and 3'. These detents are mountedupon a common fulcrum and are adapted to lie in the path of therespective sash under spring tension.

The detent j is calculated to engage with the keeper Z, located upon theupright frame of the sash b.

The above-described device would be operated as follows: Assuming thewindow to be locked, the person wishing to open the same would grasp thesash lift or lifts f and in so doing cause its complemental detent e tobe disengaged from the catch (Z. The lower sash being thus released maybe pushed upward until its upper extremity comes in contact with andpushes backward through the slots in the member h detent 'Z, therebycausing the detent to be disengaged from the keeper Z. The upper sash isthen ready to be moved at will. The locking of the window is automatic.In other words, presuming the upper sash is in its proper place, themoment the lower sash passes its point of contact with the detent Z itscomplemental detent springs into engagement with its keeper Z. Likewisewhen the lower sash reaches its lowest osition the detent. e engageswith the (ciatc cZ, thus automatically locking the win- Having thusdescribed the nature and objects of my invention, what I claim as new,and desire to secure by Letters Patent, is

The combination in a window-frame and its upper and lower sash mountedtherein of a kee or vertically arranged upon the upper sas a rectangularplate secured to the window-frame said plate being provided with slotsthat extend entirely through the same, a pair of lugs extendingrearwardly of the late, a pair of generally rectangular detents avingpivotal relation with said lugs and extending obliquely in parallelismfrom the rear of said late forward through said slots into the pat ofthe respective sash, a member located between and carried by the detentsand a spring one end of which is secured to the member and the other endthereof to the plate, substantially as described.

In testimony whereof I have hereunto set my hand.

HENRY L. BENNER.

, In presence of- W. J. JACKSON, ERNEST N..Ross.

